high performance melt filters

ERFContinuous Melt Filter

High-Performance Melt Filters ERF 200/350/500 high performance melt filters

1983 The company is founded in Augsburg, Bavaria, by a

mechanical engineer named Roderich Ettlinger who

begins producing injection molding machines and other

specialized machinery. The first machine within the

“srm” range is delivered to a customer in Sweden.

1999 Ettlinger opens a new production facility to keep up

with the growing demand.

2004 Roderich Ettlinger realizes an idea that has been

occupying him since the 1970s. The ERF 200,

Ettlinger‘s patented melt filter system, is launched in

the market.

2010 After 27 successful years in business Roderich Ettlinger

hands the company over to his son Thorsten Ettlinger

and Volker Neuber, who are both responsible for all

future technical and commercial development of the

company.

2013 Ettlinger North America LP opens in Atlanta.

Customers in the US and Canada have since profited

from an efficient sales network as well as local

technical services such as rapidly available spare parts.

2015 Ettlinger‘s office and production space is extended in

response to rising demand.

2018 Ettlinger joined Maag, who is represented in the

markets with its brands „Maag Pump & Filtration

Systems“, „Automatik Scheer Strand Pelletizers“,

„Gala Automatik Underwater Pelletizers“ and

„Reduction Pulverizing Systems“.

Ettlinger is active worldwide with representatives in all the

major markets. The company‘s core competency is the

development and manufacture of injection molding machines

and high performance melt filters.

To meet the demanding requirements of melt filtration,

Ettlinger makes high performance melt filters for continuous

filtration of feedstock with varying degrees of contamination.

This patented systems filter out contaminants such as paper,

aluminum, wood, silicones or high viscosity plastics from all

standard polymers.

The injection molding machines are especially suitable for

the production of plastic parts such as plastic pallets, fittings

or manholes weighing up to 100 kg – or more on request.

Because of its integrated building-block system, Ettlinger can

offer low-cost solutions and flexible machine concepts for a

very wide range of applications.

35 YearsExperience and Know-How

High-Performance Melt Filters ERF 200/350/500 high performance melt filters

Rubber, wood

• PP or ABS (refrigerator scrap) with rubber and wood

contaminants

• Levels of contamination approx. 3 %

• Filtration with 150 µm

• Melt loss approx. 2 %

Paper

• PS film with paper sticker

• Levels of contamination approx. 2.5 %

• Filtration with 120 µm

• Melt loss approx. 1.5 %

Application Examples

Input Type of Level of contami- Contaminant Melt loss material contamination nation Input [%] concentration [%] [%]

PE, PP Diverse 0.5 55 - 65 0.3 - 0.4

PP or HDPE PET 4 57 - 66 2 - 3

PS Aluminium 3 - 4 57 - 60 2 - 3

PE Aluminium 10 60 - 65 3.5 - 4

PP Silicon, Rubber 2 - 3 55 - 60 1 - 2

PE Paper 5 58 - 67 3 - 4

Aluminium

• HDPE (pipe material) with aluminum particles

• Levels of contamination approx. 18 %

• Filtration with 150 µm

• Melt loss approx. 9 %

PET• PE (bottle closures) with PET• Levels of contamination approx. 2 %• Filtration with 150 µm • Melt loss approx. 1 %

Characteristics

The continuously operating ERF melt filter is suitable for

filtering plastic melts with low to very high levels of

contamination. The main characteristics of the fully enclosed

system include constant melt pressure, extremely low

melt loss and very short contaminant retention times.

The ERF can be integrated into any existing extrusion

line, has a small footprint and is available in three sizes

depending on required throughput capacity: ERF 200,

ERF 350 and ERF 500.

Recycling, sheet and film extrusion, and profile extrusion

are typical applications.

Application Areas

High-Performance Melt Filters ERF 200/350/500 high performance melt filters

Technical Data ERF 200 ERF 350 ERF 500

Total filter area 1,250 cm2 1,570 cm2 3,140 cm2

Filter diameter 200 mm 250 mm 2 x 250 mm

Throughput rate up to 1,000 kg/h up to 3,800 kg/h up to 6,000 kg/h

Number of heating zones 5 5 6

Installed heat capacity 12 kW 16 kW 31 kW

Motor capacity, filter 5.2 kW 5.2 kW 7.6 kW

Motor capacity, exit screw 1.4 kW 1.4 kW 2.3 kW

Speed of filter (steplessly adjustable) 0 - 12 min-1 0 - 11 min-1 0 - 10 min-1

Speed of exit screw (steplessly adjustable) 0 - 27 min-1 0 - 26 min-1 0 - 18 min-1

Weight 800 kg 1,000 kg 2,000 kg

Maximum operating pressure 300 bar 300 bar 300 bar

Available degrees of filter fineness 80 / 120 / 150 / 200 / 250 / 300 / 500 / 750 / 1.000 / 1.300 µm

Principle of Operation

A filter drum featuring millions of conical drill holes rotates as

the melt flows through it from the outside towards the interior.

The contaminants contained in the melt remain on the filter

surface and, within one revolution of the filter drum, are fed to

the exit screw by means of a scraper. The filter is driven by

energy-efficient servo motors, which ensure highly accurate

control of the filter shaft and the exit screw. A unique advantage

of the ERF melt filter is that the speed of the filter and the speed

of the exit screw can be separately adjusted. This enables the filter

surface to be kept constantly free and clean and the melt loss

to be reduced to a minimum.

Benefits at a glance

• Fully automatic operation

• Extremely low melt loss

• Constant melt pressure downstream of the

filter (+/- 2 bar)

• Short retention times of the contaminants

on the filter surface

• Fully enclosed system

info@ettlinger.com | www.ettlinger.com

Ettlinger Kunststoffmaschinen GmbHMesserschmittring 49

D-86343 Königsbrunn (Germany)

Phone: +49 (0) 8231 / 34908-00

Fax: +49 (0) 8231 / 34908-28

Ettlinger North America LP1555 Senoia Rd.

Tyrone, GA 30290

USA

Phone: 770-703-8541

sales-na@ettlinger.com